Quarterly report pursuant to Section 13 or 15(d)

Inventory (Details)

v3.20.1
Inventory (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Finished goods $ 23 $ 47
Work in process 303 322
Raw materials 883 888
Total inventory $ 1,209 $ 1,257